Caffeine Tracker vs Caffi

Caffeine Tracker: Caffi helps you understand exactly how caffeine affects your body, your energy, and your sleep. Most people drink coffee on autopilot. Caffi changes that. Log every cup, shot, or energy drink in seconds and watch your personal caffeine curve come to life. See how long your last espresso will keep you wired, when your focus will peak, and the exact moment caffeine stops protecting your sleep. This caffeine tracker is built around your biology, not averages. Caffi calculates your personal half-life based on your habits, age, and weight, then predicts your sleep cliff so you know your last safe drink time every single day. KEY FEATURES - Personal half-life calculation tuned to your body - Sleep cliff prediction so you stop caffeine at the right time - Apple Watch HRV integration for recovery insights - Beautiful caffeine curve showing real-time levels - One-tap logging for coffee, espresso, tea, energy drinks, and more - Custom drinks with your exact caffeine amounts - Streaks to build healthier caffeine habits - Siri Shortcut for instant logging - Home Screen widgets for at-a-glance tracking - Apple Watch app and complications - Apple HealthKit integration - Sleep Loops to protect your nights - Studio and Mixer for personalized tracking - Dark mode and full iCloud sync WHY CAFFI Most caffeine tracker apps just count milligrams. Caffi shows you the curve, predicts the crash, and tells you when to stop. It is the caffeine tracker built for people who care about both performance and sleep. Whether you want to cut back, optimize your morning routine, or simply understand why some afternoons feel different than others, Caffi gives you the data and the clarity to make better choices. CAFFI PRO Unlock the full caffeine tracker experience with Pro: - Unlimited custom drinks - Advanced sleep insights and HRV trends - Full history and export - Premium widgets and complications - All future Pro features included Try Pro free for 7 days. Then $7.99 per year or $14.99 lifetime. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID settings. Privacy Policy: https://arytec.ch/privacy Terms of Use: https://arytec.ch/terms

Caffi is a caffeine coach disguised as a tracker. Most caffeine apps just count milligrams. Caffi models how caffeine actually moves through your body, with a 5-hour half-life and a 30-minute absorption ramp, and tells you in plain language when the coffee you're about to drink will ruin your sleep tonight. LOG EVERY DRINK IN SECONDS Tap a favorite. Browse 30+ presets. Or log a custom amount. Every entry mirrors to Apple Health's Dietary Caffeine automatically. SEE YOUR DAY ON A CURVE Real-time mg in body, peak time, sleep-safe window, and a clean editorial chart that doesn't look like a hospital monitor. ASK BEAN, YOUR IN-APP COACH Bean (the friendly drop) is powered by GPT-5 and knows your day's intake, goals, and bedtime. Ask 'when should I stop today?', 'why am I jittery?', or 'how do I cut back without crashing?' and get a real answer in 1 to 3 sentences. No platitudes. SLEEP IMPACT, EVERY NIGHT Caffi reads your Apple Health sleep data with permission, correlates it with your caffeine timing, and shows you exactly how much caffeine you'll have in your system at bedtime. DESIGNED LIKE A MAGAZINE Dark editorial palette, italic serif headlines, native iOS 26 Liquid Glass chrome. Made to live on your home screen, not get buried in a folder. PRIVACY FIRST No ads. Health data stays on device. Your caffeine logs sync to your private Firebase document, scoped to your Apple ID. Read the full policy at caffi.app/privacy. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/